Why do you need to have a complex file structure? I have one folder for music, one for videos and one for photos (well, ones that I want to keep that the camera app doesn't like to deposit to)... There are three copies of my music folder... one on my desktop, one on my phone and one in my archival NAS. If one source fails, I can recover by copying it back from one of the missing folders. Don't get me wrong... I still stream as well, but I don't have to be online and my file management is really minimal... except for when I get a new phone, I don't necessarily need to manage the file system more than say once a month (if that).